Highly efficient green organic light-emitting diodes from single exciplex emission

被引：32

作者：

Wang, Dan ^{[1
,2
]}

Li, Wenlian ^{[1
,2
]}

Chu, Bei ^{[1
,2
]}

Su, Zisheng ^{[1
,2
]}

Bi, Defeng ^{[1
,2
]}

Zhang, Dongyu ^{[1
,2
]}

Zhu, Jianzhuo ^{[1
,2
]}

Yan, Fei ^{[1
,2
]}

Chen, Yiren ^{[1
,2
]}

Tsuboi, Taiju ^{[3
]}

机构：

[1] Chinese Acad Sci, Key Lab Excited State Proc, Changchun Inst Opt Fine Mech & Phys, Changchun 130033, Peoples R China

[2] Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China

[3] Kyoto Sangyo Univ, Fac Engn, Kyoto 6038555, Japan

来源：

APPLIED PHYSICS LETTERS | 2008年 / 92卷 / 05期

关键词：

D O I：

10.1063/1.2841060

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Spectral single and stable green exciplex emission was demonstrated from organic light-emitting diodes (OLEDs) with 4,4('),4(')-tris[3-methylphenyl(phenyl)amino] triphenylamine and 4,7-diphenyl-1,10-phenanthroline that function as electron donor (D) and acceptor (A), respectively. As 8-hydroxyquinoline aluminum (Alq(3)) was attached to the acceptor layer, electroluminescent (EL) properties of the two exciplex-type OLEDs with D/A-bilayer and D:A mixture layer configurations were markedly improved, i.e., a peak current efficiency of 7.6 cd/A at 2.38 mA/cm(2) in three-layer device and a maximum luminance of 6620 cd/m(2) at 8.7 V in blend layer device were obtained, respectively, without changing the peak position (535 nm) and the shape of EL spectrum. Discussion is given on the harvest of the pure green exciplex emission and enhancement of luminance which is obtained by inserting Alq(3) layer. (c) 2008 American Institute of Physics.

引用

页数：3

共 16 条

[1] A field-dependent organic LED consisting of two new high Tg blue light emitting organic layers:: a possibility of attainment of a white light source [J].